Bank of Canada values and prices of 1954 with the devil's face banknotes This series caused controversy because highlighted areas of the Queen's hair gave the illusion of a grinning demon behind the ear. The term "Devil's Head" is commonly used to describe these bank notes. The Bank of Canada had both bank note companies modify the face plates by darkening the highlights in the hair. These modifications were made in 1956 for all denominations.
People will see the devil or the Virgin Mary or just about any "face" in any pattern- even on random stains and burnt toast! It is called pareidolia. We are all programmed to it to a certain degree. I see a cat, a skull, and a troll face in the faux-marble patterns on my bathroom wall. I moved your post to its own thread, since you posted it seemingly at random in a completely unrelated Coin Chat thread.
